My family's hearts go out to these people that have been affected in such a sudden and brutal manner. I constantly wonder about the state of humanity and how it will all turn out.

REal terrible thing to happen. Yes it is a real worry the way the world has changed in recent years, including NZ.

I really makes me wonder if we should be trying to dramatically increase NZs population like we are, from importing our population from overseas, as quickly as we are. There are good things you get from having all these cultures, but you also potentially get bad eggs.

IMO it is only a matter of time before NZ has some form of this type of event. It is perhaps a big wakeup call. Already we have cities in NZ installing cameras in all the cities main streets for surveillance.

With these types of attacks now occurring at least once a year you have to wonder if we are going to start seeing airport style security at many public events. The problem is that a lot of large events don't have definite entry and exit points - e.g. the Boston Marathon.